WowAce

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

Loot management tool

Shows the mirco menu and game menu in a clickable broker tooltip. Also shoes fps and latency.

Replacement for ActionButton_Show/HideOverlayGlow APIs

Create panels for customizing your UI, sucessor to eePanels

Check the quality of wild battle pets

LibItemInfo-1.0

Officially the original source for where things are in the Broken Isles, in HandyNotes

Show what quests have changed

Automatically enables or disables combat logging based on location.

oUF element for highlighting debuffs that are dispellable by the player

Animated target indicator

A customizable view of friends and guildmates.

Data Broker Display similar to FuBar

Enables multi-line/unlimited-length pasting of text or commands into WoW

Max Camera

HideTalkingHead

Blocks Chinese Chat

Mutes various chat related annoyances while in capital cities and instances.

A blizzard group finder replacement